Weighing machine



Oct. 16,1928.

. w. PULZ mama ncunls 2 Sheets-Sheet 1 Film! Sepi. 28, 1923 UNITED STATES PATENT oFF cE.

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Application filed September 28, 1928, Serial No. 665,362, and in Norway Kay 5, 1988.

-My invention relates to weighing machines and more especially to the type of machine in which the load is balanced by the addition or subtraction of weights of different size. It is an object of my invention to provide a machine of this kind which at the same.

ing the goods to be weighed, has been ac counted for or not. Further objects of my invention will appear as the specification proceeds.

In the drawings afiixed to this specification and forming part thereof a machine embodying my invention is illustrated diagrammatically y way of example. In the draw ngs:

Fig. 1 is a vertical transverse section, Fig.- 2 is a vertical longitudinal section, Fig. 3 is a plan view partly in horizontal section,

Fig. 4c is a side view of part of the apparatus,

Fi 5 is a plan view corresponding to Fig. 4 am? Fig. 6 shows a detail.

Fig. 7 is a cross-section on the line VII-' VII 1n Fig. 3.

Referring tov the drawing the load to be weighed is placed on the pan 1 sup orted by a s stem of scale beams 2, 3. The onger armo the scale beam 2 extends above a lurality of .sets of-weights 4, 5, 6, 7, carrie by hangers 4., 5, 6, .7. The weights in eac set are equal in weight and the weights of the several sets increase in weight from the fulcrum to the free end of the beam. The several weights can be lifted ofi or deposited on the hangers4 to 7 bf; meansof lifting plates 4", 5",- 6", 7", whic are opera-tedby racks 8 and segments 8, the segments being moved b means of levers 9 the mac ine. o Instead of the segments and racks other members for effecting the movement may be used, for example levers with slots and guide a an observation opening 12 in the casing.

l- After the levers have been adjusted in the' projecting from Upon the levers '9 are provided scales 11 carry are provided set simultaneously. The type discs 14; are

likewise provided with segments 15 car ing figures so that also on the other side 0 the casing the weight-ascertained can be read off through the opening 16.

The modification illustrated in the drawing shows a double ticket printing apparatus so that a printed card is delivered to the pur-,

chaser, a second imprint being produced upon a paper strip for control purposes by rotating a crank 17 a on the side of the casing. The operation of printing the weight is as follows: v.

On crank 17 F being turned 180 tworprinting blocks 18 and 19, which have a scissor-like movement, are set in motion b the rollers 20, 21engaging in recesses in the isc 22 mounted on the crank shaft 17. This causes the rollcre 20, 21, to approach one another so that the scissor arms 20, and 21 which are connected to one another and carry the rollers l 20 and 21 swing outwards. The free end of arm 21 moves upwards and carries with it the sleeve 51 connected with the printing block 19 by ahollow shaft. The free end of arm 20 in descending pressesthe printing block 18 downwards- In this 'manner the two blocks 18" and 19,engage with the t pe disc 14. On further rotation of the'cranl 17 a the printing blocks are again removed from the pe discs 14 and the rest of the movement of 7' t e crank is used for cutting off the printed card or for feeding the aper strip (this operation'is not illustrate The double ticket printing apparatus is so devised that a single paper strip 52 passes off a reel 53 (Fig. 2) across the type discs 14.,

The printed card cut off this strip is ejected through a shoot 23, while the second print is effected upon a strip 24extending across a roller-24, this strip remaining in the machine to serve as a-check.

In order that the figures may be printed in the correct order and may be correctly read ofli' at'the point 16 the type discs 14 with the scales-15 secured thereto ar'e'connected with segments-13b; means of hollow shafts 14 inserted one in the other.

The indicating mechanism comprises segment levers 26 mounted on the same shaft 25 upon'which the weight adjusting levers 9 one of the hand'levers 9 does not in any way affect the transmission members of the levers 26, and vice versa; for the hollow shafts 14' and 27' which serve for the transmission are not rigidly connected with the corresponding type? discs 14, but only engage with these upon a predetermined displacement of the par ticular lever. 9 or 26, the engagement being eflected in each case by a stop. Observation openings 12 and 16 allow reading the amount to be paid as well as the weight ascertained.

By means ofthe hollow shafts the weighing machine can be connected with adding and multiplying mechanism.

There is further provided a separate mechanism for determining the tare'weight. On the scale beam 2 is secured a bar 28 (Fi s. 4 and 5) carrying a sliding weight 29 disp aceable from the outside by means of rack 30,

- gear wheel 31 and handle 32. The point of,

contact of the gear'wheel mounted on a fixed spindle with the movable rack coincides with the fulcrum of the scale beam so that this beam is not influenced thereby.

In order to makeit possible for the seller and the purchaser to ascertain whether the tare weight has been moved an indicating device is connected with the tare weight moving mechanism. If the tare weight is in the zero position the rod 33 moves the plate 33 so that the words Tare disengaged can be read. This rod 33 is held in the zero position by a pawl 34. As soon as the tare weight 29 is moved a cam disc 36 mounted on the tare shaft 35 raises the pawl 34 and the plate 33. moves downwards, forming the legend Tare not disengagedl.

The gear wheel 31 ig. 6) which serves for moving the weight 29 is mounted in a sliding casing 48 the movement of which is controlled as follows. Before the tare weight 29 can be moved the hand wheel 32 which serves for this purpose with the shaft 35 must be pulled out against the action of a spring 47 and takes with it a rod 45 connected to it by a collar 44. The rod 45 has cam faces upon'which the sliding casing '48 rests. When the handle 32 is pulled the casing 48 is pressed upwards by the right hand cam face 45','until the toothed wheel 31 engages the rack 30. As soon as the tare weight 29 has been adjusted and the handle 32 is released, the shaft 35 and with it the bar 40 move backunder the action of the spring 47 and the bar 45 by means of the cam face 45 disengages the wheel 31 from the rack 30. In order that the cam disc 36 (Figs. 4 and 6) may not move with the sliding shaft 35 it is mounted toslide thereon and has a connecting slot 46 and is controlled by a pin 46 fixed on the shaft 35. \Vhen the shaft is reciprocated it slides in this slot. In order to prevent the printing of a given weight when the tare is not disengaged there is provided on the crank shaft 17 (Figs. 4 and 5) alocking wheel in which engages a locking rod 37. The printing crank 17 can only be actuated when pressure is applied to the knob 38 of the locking rod 37, this being possible only .if the tare weight 29 is in thezero position. If the tare weight 29 is displaced a locking slide 39 is at once moved in frontof a stop 40 on the rod 37. This locking actionis effected by means of a second cam disc41 (Fig. 4) which actuates an angle lever 42 as soon as the tare weight 29 starts moving. The locking rod 37 is also employed for returning the plate 33 into the zero position whenever it has been lowered in order to cancel the tare weight. For this purpose a rod 33 isconnected with an angle lever 43 which engages with the rod 37 by means of a pin and slot connection.

I wish it to be understood that I do not desire to be limited to the exact: details of construction shown and described, for obweights capable of acting on different points of said beam, the weights in one set being equally heavy,.the weights in the set acting on the point of the beam remotest from the fulcrum being heavier than those nearest the fulcrum, means for gradually bringing the weights of one set into and out of cooperation with said beam and registering and recording mechanism .operatively associated with said latter means.

2. Awei hin machine comprising a scale beam, a plurality of sets of superimposed weights capable of acting on different points of said beam, the weights in one set being equally heavy, the weights in the set acting on the point of the beam remotest from the fulcrum being heavier than those nearest the fulcrum, means for gradually bringing the weights of one set into and out of cooperation with said beam, registering and recording mechanism operatively associated with sai latter means, a separate weight for the tare and means for indicatin the operative condition of said separate weight.

3. A weighing machine comprising a scale beam, a plurality of sets of weights, means llu for placing the weights in each set suwessiverecordin mechamsm operatively assoclated forc I ly in or out of operation and andrecordin mechanism operatively assoc ated with sai means, said mechanism comprising two paper strips, means for print ng the 5 weight on either strip and means for severing a ticket from one of said strips.

4. A weighing machine comprising a scale beam a plurality of sets of weights, means for placing the weights in each set successively in or out of operation and registering and with sai means, said mechanism comprising a plurality of type wheels, printing blocks disposed in diametrically opposite positions near said wheels, means for simultaneously of sa' wheels and means for carrying a paper strip to pass between each block and said wheels.

5. A weighing machine comprising a scale beam, a; plurality of sets of weights, means for placing'the weights in each set successive- 1y 1!]. or out of operation and registering and recordin mechanism operatively associated withsai means, said mechanism comprising a plurality of'type wheels, printing blocks disposed in diametrically opposite positions near-said wheels, toggle levers for simultaneously forcing said blocks against the cirapler stripto. pass between each block w eels.

' said means, figure-indicating means adjacent said blocks against the circumference mechanism operativel cuinference of said wheelsand means for car-.

said weight-registering mechanism and therefore adapted for simultaneous reading and separate manually operable means for actuatin said figure-indicating means.

5. A weighing machine comprising a balance, a plurality of sets of weights, means for placing the weights in each set successively in or out of operation, registering and recording mechanism operatively associated with said means, figure-indicatin means ad'acent said weight-registering mec anism an therefore adapted for simultaneous reading, separate manually operable means for actuating said figure-indicatin means and scales connected with said recor 'ng mechanism and said fig are-indicating means.

8. A weighing machine comprising ascale beam, a plurality of sets of weights, means for placing the weights in each set successivel in or out of operat1on,:registering and reco associated with said means, a separate weight for balancing the tare, means for indicatin theoperative con-- -dition of said weight an means fordisconnectingsai'd indicatin means.

9. A weighing mac ine com rising a scale beam, a plurality of sets of wei means for placing the weights in ea h set successivel' m or out of operatiomregistering and recor ing mechanism operativjely associated with sa d means, a separate weight for balancing the tare, means for indicating the operative condition of said weight and means for preventing saidmechanism from operating until said tare balancing weight has. been carried into its zero podtion. a

In testimony whereof I my signature.

WILLY 

